content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  import static org.junit.Assert.*;
  
  import java.util.concurrent.atomic.*;
  
  import org.junit.Test;
  
  import io.reactivex.common.exceptions.TestException;
  import io.reactivex.common.functions.*;
  import io.reactivex.observable.*;
  import io.reactivex.observable.observers.TestObserver;
  import io.reactivex.observable.subjects.PublishSubject;
  
  public class ObservableIgnoreElementsTest {
  
      @Test
      public void testWithEmptyObservable() {
          assertTrue(Observable.empty().ignoreElements().toObservable().isEmpty().blockingGet());
      }
  
      @Test
      public void testWithNonEmptyObservable() {
          assertTrue(Observable.just(1, 2, 3).ignoreElements().toObservable().isEmpty().blockingGet());
      }
  
      @Test
      public void testUpstreamIsProcessedButIgnoredObservable() {
          final int num = 10;
          final AtomicInteger upstreamCount = new AtomicInteger();
          long count = Observable.range(1, num)
                  .doOnNext(new Consumer<Integer>() {
                      @Override
                      public void accept(Integer t) {
                          upstreamCount.incrementAndGet();
                      }
                  })
                  .ignoreElements()
                  .toObservable()
                  .count().blockingGet();
          assertEquals(num, upstreamCount.get());
          assertEquals(0, count);
      }
  
      @Test
      public void testCompletedOkObservable() {
          TestObserver<Object> ts = new TestObserver<Object>();
          Observable.range(1, 10).ignoreElements().toObservable().subscribe(ts);
          ts.assertNoErrors();
          ts.assertNoValues();
          ts.assertTerminated();
          // FIXME no longer testable
  //        ts.assertUnsubscribed();
      }
  
      @Test
      public void testErrorReceivedObservable() {
          TestObserver<Object> ts = new TestObserver<Object>();
          TestException ex = new TestException("boo");
          Observable.error(ex).ignoreElements().toObservable().subscribe(ts);
          ts.assertNoValues();
          ts.assertTerminated();
          // FIXME no longer testable
  //        ts.assertUnsubscribed();
          ts.assertError(TestException.class);
          ts.assertErrorMessage("boo");
      }
  
      @Test
      public void testUnsubscribesFromUpstreamObservable() {
          final AtomicBoolean unsub = new AtomicBoolean();
          Observable.range(1, 10).concatWith(Observable.<Integer>never())
          .doOnDispose(new Action() {
              @Override
              public void run() {
                  unsub.set(true);
              }})
              .ignoreElements()
              .toObservable()
              .subscribe()
              .dispose();
          assertTrue(unsub.get());
      }
  
      @Test
      public void testWithEmpty() {
          assertNull(Observable.empty().ignoreElements().blockingGet());
      }
  
      @Test
      public void testWithNonEmpty() {
          assertNull(Observable.just(1, 2, 3).ignoreElements().blockingGet());
      }
  
      @Test
      public void testUpstreamIsProcessedButIgnored() {
          final int num = 10;
          final AtomicInteger upstreamCount = new AtomicInteger();
          Object count = Observable.range(1, num)
                  .doOnNext(new Consumer<Integer>() {
                      @Override
                      public void accept(Integer t) {
                          upstreamCount.incrementAndGet();
                      }
                  })
                  .ignoreElements()
                  .blockingGet();
          assertEquals(num, upstreamCount.get());
          assertNull(count);
      }
  
      @Test
      public void testCompletedOk() {
          TestObserver<Object> ts = new TestObserver<Object>();
          Observable.range(1, 10).ignoreElements().subscribe(ts);
          ts.assertNoErrors();
          ts.assertNoValues();
          ts.assertTerminated();
          // FIXME no longer testable
  //        ts.assertUnsubscribed();
      }
  
      @Test
      public void testErrorReceived() {
          TestObserver<Object> ts = new TestObserver<Object>();
          TestException ex = new TestException("boo");
          Observable.error(ex).ignoreElements().subscribe(ts);
          ts.assertNoValues();
          ts.assertTerminated();
          // FIXME no longer testable
  //        ts.assertUnsubscribed();
          ts.assertError(TestException.class);
          ts.assertErrorMessage("boo");
      }
  
      @Test
      public void testUnsubscribesFromUpstream() {
          final AtomicBoolean unsub = new AtomicBoolean();
          Observable.range(1, 10).concatWith(Observable.<Integer>never())
          .doOnDispose(new Action() {
              @Override
              public void run() {
                  unsub.set(true);
              }})
              .ignoreElements()
              .subscribe()
              .dispose();
          assertTrue(unsub.get());
      }
  
      @Test
      public void cancel() {
  
          PublishSubject<Integer> pp = PublishSubject.create();
  
          TestObserver<Integer> ts = pp.ignoreElements().<Integer>toObservable().test();
  
          assertTrue(pp.hasObservers());
  
          ts.cancel();
  
          assertFalse(pp.hasObservers());
  
          TestHelper.checkDisposed(pp.ignoreElements().<Integer>toObservable());
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(Observable.just(1).ignoreElements());
  
          TestHelper.checkDisposed(Observable.just(1).ignoreElements().toObservable());
      }
  }
  